White VTS' are much rarer than Black ones. Ive only ever seen two and they were both back in 2001. Saw them both at the same time, one at Citroen Manchester, a T-99 that had been in stock for over 12 months and one at Citroen in Worcester that was a V-99 and I ended up buying.
Its funny because I hated it quickly after buying it and swapped it after 15 months for the Silver one. Looking back now that White has become cool again, I guess it wasnt such a bad choice!